1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9167bf54e41664818a62c3287c09460eaec318870d1bba8615ebcee5338f8c59. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/99920e9a-e5f8-4f87-b63a-060981da7467.json and https://artists.proofprofile.net/proofs/artist/99920e9a-e5f8-4f87-b63a-060981da7467.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65a9d4407fcc744c01b84b65dca63ddb01ab3f93fd663b7f7517f601eeb169f6. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRR642300360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98213588156db79bf16d3767f416e486543bd441eb936b084310c2876f78b6f1. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRR642300361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c1186a01f596138d433bef6d42150f22eb984f7f13278ff27ec69449e6e4a2a. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRR642300364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56205e1267c556a34452424b2f527a46c682e53a9a4a978f8c10382ae8f13b78. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRR642300370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd967efcc10f089aa7fe860adf52d34ed8686931154e070da533634fd34d515e. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZWFP2484663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe351e1a295efaa26a5643121df95420f9c6f8407d87e31e6f00b61bde3c547e3. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZWFP2484669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26c5a997b7406f894c1ed5338d720010f976cc53d8652aba95314b093f46dba1. Chain 2 (Bitcoin): anchored in block 960349 (2026-07-31T05:23:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZWFP2484661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91809f542209fb86e8f17659f553d19cb68a97e1aad1029caffcee6ff95ff67e. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZWFP2484662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a22be0a820599f01dbd70e989bf92d8c181e43c08af86574e5a550cd930fedb. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZWFP2484664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x355c61ba8632bc7ae1ac1f05bd3fb1181b3cfe269db6e55aaa13da04289e0737. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZWFP2484665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2c1d70d7dde50228744af28943722fd1397f9f49f0fba422aa12c3e99431d69. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZWFL2482616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a4cc94c42182eb5cecdd34e1c58ac420de2e5ff24cd4d46e23f88efc5c724b7. Chain 2 (Bitcoin): anchored in block 960379 (2026-07-31T09:25:34Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZWFP2484668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf231e43f99ba052063f8e7d0343922133b2241aeee55cb164ca51213e7222ffb. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZWFP2484670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed0431cca54d0628f78d66f54a638b4bb93191b503d96dd42fd784997a6bd8e2. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6K2486057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f1dcd448027e0af2cf39fb935a9845db9e90421be3d7466b3f9ffa9af94a6b7. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6K2486059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb58d00669e3384aed0a4b4dcab95443aafa0f3146dfa497dbf7686b82b729690. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6K2486060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9b01277904fb078d1a92ed220e40f317eecd20765275e00fb1d40ace7d513c6. Chain 2 (Bitcoin): anchored in block 960489 (2026-08-01T00:40:43Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6K2486064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f055b428381e12c4a00cb59f2195613054dcbdd07a1f6d6d7ac61a35ab0e042. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZES52560701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13d515f73e6a202d2483cc69bd5e022f66bf7f2a2339b619def1313a7255ac24. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZES52560704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50fb29f1c0dcfe5cf881b34c501c4b046b0e13e8cfe0036737a931105f9e385a. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZES52560703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04b08ab1c11e65f841ddfb3a4b76041afa3f262cac283ce37faf79c32951c253. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZFZ42520711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb9566ce28a891f02b150ed25abe9a0b353231886df1f6b6f0ea1e820210cb49. Chain 2 (Bitcoin): anchored in block 960381 (2026-07-31T09:50:11Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZDA42517703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19f5d483a0941525d77c8fe7c2ec69d4c80310c6357b9702a0b795c2dd567b29. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZFYY2564302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b9b3ef8f3d7e33c0230ef07d8545113493413cc4a18c04d8c776317869018e4. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QT3EY2473610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cb9b1eb2108b0ebaeb7b989b52ef9678897fa9f2d70f751bf1d5077ecd509f9. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZRP42420833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2c4a6d5c699e88d70ca8b0c1bbb4cdfdbdd3ac8affdaa4dae6f087cb4eb63fa. Chain 2 (Bitcoin): anchored in block 957212 (2026-07-08T18:33:44Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6K2486058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d3f7c68ae9be7fd3cbc14aa771d55b117e037af4ff44be1726f6a957474df61. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZPLS2391309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd87738ff10e351b42e6ce99514d01161fa56aeeae3d87a9e3adc6cba7c15cee9. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZPLS2391308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9ca26776c302a837fd6700b89b174c8e27f5846f89a252bacf20ea76a6780e4. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTBA2406068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c98f449e16adaf8e2369af71fd1b6689a81e23856e6806dd27cc4577366f229. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTBA2406071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e92a204bdf1fe784e529de9271bf583ec0117697577fa286708d67f57546e77. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTBA2406072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e83ac89016453a015a8341d37d38edcd708e1eacb60c2dc8628dc16ad406403. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTBA2406073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x592cf2297aae3c070171d48df2bad5280af56358a4a89e6dabfc7afad4218ccc. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTBA2406074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e5f8dfed2dc691a09324d6d3c820634b97f6d4f6dc08117ec59c3079048719b. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTBA2406075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2401ab340e71d85cf60afa7688302df6893c4974999b4d64c8c7e9b5eae5c70. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6L2551826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ffec16ad395b73fe9cdf1eac58fa81680db266fe427a950da25b67564282f43. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6J2500626.